The invention projects a known geometry light source onto the surface of an object. A camera with a known distance and angular orientation with respect to the light source is used to capture the light source image on the object. The normal to the surface of the object is determined from the known size of the projected image, the angles of the intersecting lines in the projected image and the corre...

The foot section 2 of the windmill arm is cast into a steel sleeve 3, the interspace 7 between the foot section 2 and the steel sleeve 3 being filled at the bottom with a casting compound 8 and being filled around the upper edge of the steel sleeve with an elastomeric material 9, for example rubber. There is no direct contact between the steel sleeve 3 and the fibre-reinforced polyester material 5...

Thermal-radiation imaging devices, elements and systems are described. The device comprises on a substrate (2) e.g. of sapphire semiconductor bodies or body portions in the form of parallel elongate strips (1), e.g. of cadmium mercury telluride. Biasing-electrode means (6 and 7) e.g. of gold are spaced on the strips (1) for causing a bias current predominantly of majority charge carriers to flow a...

In order to provide an uncomplicated and economical front surface contact for photovoltaic cells (10) with good current discharge capability and high radiation permeability, the front surface contact (20) is composed of several layer (22, 24, 26) which are essentially unaligned with respect each other. The layers (22, 24, 26) are composed of different materials, which guarantes good ohmic coupling...

In a combined cycle electrical power generator plant, the shut-down process includes a cooldown control period which is minimized before shutting down the gas turbine by detecting first whether a non-steaming condition has been reached and whether the gas turbine has been reduced to minimum load.

The web panes heaters. Air blown through a column fixes the web at a known distance from the surface by the Coanda effect. There is a sheet of glass between the web and the heaters. The air is directed to sweep away moisture-laden air and to cool the heat radiators. The recirculating air is treated to remove contaminants and is heated before return.

A low-voltage circuit breaker comprises a current transformer which at least partly encloses a first connecting bar and is supported by a stationary carrier independently of a second connecting bar. In the region opposite this support, the current transformer is disposed between an L-shaped carrier (angled-off), of the contact arrangements of the circuit breaker and an insulating piece inserted be...